Envelop-fastener.



J. H. HUSTED.

E N V E L 0 P FAST E N E R APPL lcATloN f 1 LE n D Ec. 1 9 1 9 1 4.

Patented Aug. 17, 1915.

2 s HEETswS H E ET 1 l www man /25 comme PLANDCRAPM co.. WASHINGTON. D. cY

J. H. HUSTED.

ENVELGP FASTENER.

APPLICATION FILED Dems. I9I4.

Patented Aug. 17, 1915.

2 SHEETS-SHEET 2.

PATENT tlFFlltlbl.

JULIUs H.

HUSIED, 0F CHICAGO, ILLINOIS.

ENVELOP-IEASTENER.

To all whom t may concern.'

Be it known that I, JULIUs H HUsTnD, a citizen of the United States, residing at Chicago, in the county of .Cook and Stateof Illinois, have invented a new and useful Improvement in Envelop-Fasteners, of which the followingis a specification.

My invention relates to an improvement in the class of devices used for so fastening down the aps of envelops (including wrappers and the like), as to facilitate opening the latter for inspection of their contents; and Vit relates, provement on the` fastener of Letters Patent of the United States N o. 920,466, granted to me May 4, 1909. u

The primary objects oflmy present mprovement are to facilitate the manufacture of and to provide for so reinforcing the fastening where the two members it involves, respectively on the flap 4and the body of the envelop, releasably interlock, `that the material of which it is composed, which is preferably paper, may be of much lighter-weight stock than it is required to be without suchv reinforcement, and thereby considerably reduce the cost of manufacture. i

In the accompanying drawings, Figure 1 1s 2, 3 and 4 are views similar to the view presented in Fig. 1, but illustrating successive conditions ofthe fastening features in joining vthem until they are completely interlocked into the condition represented in Fig. 4; Fig. 5 is a rear view of the fastening in the condition shown in Fig. 4; Fig. 6 is a face view of an end-closed envelop provided with myimproved fastening shown in its nap-closing condition; Fig. 7 is an enlarged section on line 7, Fig. 4; Fig. 8 is a broken plan view of an envelop with its flap open and containing a slot to adapt it for use with `a modification of the fastening illustrated inthe preceding figures; Figs. 9 and 10 are face views respectively ofthe members shown in Figs. 1 and`2, but illustrating.

a slight modificationv inthe shape. of the lower member shown in Fig..`1 `and also in the construction of the companion-member to adapt the latter for use on the slotted envelop-flap of Fig. 8; Fig. 11 is a broken face view of an envelop showing its flap fastened by meansof the modified form ofmy im- Specication of Letters Patent.

more especially, to an im-` a face view showing the two members of, the fastening in unassembled relation; Figs.`

Patented Aug. 1"?, 19515.

Application filed December 19, 1914. Serial No. 878,065.

afdepending flap 14 on its lower end and a slot 15 containing a centrally projecting tongue 16 and formed by cutting out a section 15a to be hingedly folded downwardly at the back of the member. The companionmember 17 has a tongue 18 extending from its upper end, provided with notches 19, 19, and containing a slot 20 in the junction with the body of the member, which has a section cut out of' it of the preferred general Y-shape shown to form a tongue 21, the section being unsevered along its upper edge to adapt it to be folded upwardly out of the opening 22 produced by cutting it, in the aforesaid shape, out of the body of the member. i

Each member is shown in Fig. 5 to be gummed at 23 on its rear face for cementing it to the envelop. The member 13 is thus cemented to the flap of an envelop 24 (Fig. 6), and preferably to the outer face of the same, as shown, and the member 17 is similarly cemented to the body vof the envelop in position to register with the member 13. To join the members for fastening down the envelop-flap, the first operation is to fold downwardly the flap` 15a and then introduce the tongue 18, by way of the rear face of the member 13, forwardly through the slot 15 and the tongue 16 in the latter through the slot 20, thereby producing the condition of the parts represented in Fig. 2. The flap 14 is then folded upwardly, and thereupon the tongue 21 is folded upwardly over it, and the free, relatively narrow end is inserted, like the tongue 16, through the slot 20, thereby producing the condition of the parts represented in'Fig. 3. The tongue 18 is thereupon folded downwardly over the raised tongue 21 and'slot 22, and is crowded through the latter', to expand at its edgeportions, which pass through the last-named slot, at the rear face of the member 17, as described in my aforesaid patent,the notches 19 then interlocking with the adjacent edges of the slot 22, and the fastening being completed by thus bringing the parts into the condition represented in each of Figs. 4, 5, 6 and opposite' flapA letv of Fig.

As will be seen by the construction thus described, involving the provision of the iaps 14 and 15ar and tongue 21, these latter in their folded condition reinforce the structure, by added thicknesses of material, at the junction of the interlocking parts' where it is required to be most resistant of' strain, so` that the stock of which the members are formed may be of materially lighter weight than where the additional thickness, as.` afforded by these flaps and tongue, is omitted, since the strains tolwhich the body-.portions of the. fastening members are subjected are so slight as to4 render such relatively light material` adequate.

The modified, shapel of the member. 17a

`illustrated in Fig. 10, while a feature in the present improvement, is merely a matter of preference. In the modified construction of the member 13a,

1 is omitted, since. the reinforcementit would give is afforded by that portion of the flap` of the envelop 24a below a slot 15?J therein. In this modified construction, enveloprflap in position tocause the slot 15b in the latter to, register with the, slot 15 in that member. The junction of the member 17e, cemented, like the member 17, to the body of the envelop, with the member 13a,

isl effected by inserting the tonguelS through the slot 15, after folding down` the. flap 15?, introducing the tongue` 16` through, the slot 20, thereupon folding the tongue. 21 up,- wardly and preferably introducing it through the slot. 20 and; then folding the tongue, 18y downwardly and pressing it through the slot 22, asA explained in connection with the first-described construction. The omitted flap 14, however, is supplanted by the` thickness off the material of the en- `velop-flap below the slot lbfin thev latter, as

ing a second A folded and forming a slot to ad,-

the means, with the tongue 21 and flap, 15, for thus reinforcing the junction, for the primary purpose statedl of enabling lighterweight stock to be used for manufacturing the fastening without impairing its strength where resistance is required,

What l'.` claim as new and desire to. secure by Letters Patent is 1. The combination with an envelop, of

means for locking the flapto the body comprising a slotted member on one saidzy part of the envelop and a flexiblemember onthe other said part ofthe same provided with a tongueprojecting from one edge and hav tongue cut out of its body-por.- tion to be mit said` projecting tongue when inserted through the` slot in said first-named member and bent baekwardly upon the member carrying it.

2. The combination with` an envelop, of means for. locking the flap to the body comprising a slotted member on one said of Fig. 9, however, the.

the member l` is cemented tothe part of the envelop and a flexible member on the other saidL part ofthe same provided with a tongue projecting from one edge and a second tongue cut out of its body-portion to be folded and forming a slot so shaped as to permitl the tongue, when inserted through v the slot inV said rst-named member and bent bwkwardly upon the member carrying it, to

other said partfof theusame provided with a tongue projecting from; one edge and hav` -ing a second tongue-cut out of its bodyf portion to fold against the adjacent end of said first-named member and form a slot to p admit said proj ecting tongue` when inserted through, the slot inl said first-named member and; bent backwardly upon the. member carrying it, and additionalgremforcing material on said first-named member covered. by said tongues when-folded in theA joined' condition of said members. .Y

4. The combination with an envelop, of

means for locking lthe fiapto the1 body comprising a slotted. member on. one said part provided with a folding endfflap, andi a flex.`

ible member on theA other said part of; the envelop provided: with atongue projecting from one edge and having a second tongue j cut out of its body-'portion to fold` over said nap when. folded, said second tongue form.-

ing when foldede an openY slot toy admit said,v

projectingv tongue when inserted through the slot in saidl firstnamed member andr bent backwardly upon.` the `member carrying it. y l y 5.. The combinationV with` an envelop, of

means for locking. the flaptothebody comprisingr amember on one said; part of the envelop having` a section cut outof'its body.-

portion toy fold.` against theJback of: thelat# ter` and. form a slot, and: a flexibler member on the other. said part of the envelopprovided witha tongue projecting` fromv one edgeand havingl a second tonguecut outl of its'body-portion` and` adapted 'to be folded, saidv second tongue forming` when. folded an open slot toadmit saidA proj ectingtongue.- when folded over said Hapland inserted lio through the slot in said` firstnameda member i and bent backwardly over said second tongue upon the member. carrying. it.

6. The combinationl with an envelop, of

means for locking the flapto the body com.-

prisingV a member. on one said 'part ofgthe envelop provided with4 a folding` end-flap* and having a` section eut outA ofi its body.-` portion to fold ter and. form. a. slot, and a flexiblemember on theother saidirpaiut ofthe envelop provided withV a tongue projecting from one..

against theback of the.lat.-..

edge and having a second tongue cut out of backwardl its body-portion to fold over said end-flap in its folded condition, said second tongue forming in its folded condition an open marginal e Copies of this patent may be obtained for ve cents each, by addressn Washington, D. C.

y upon the member carrying it, and interlocking means intermediate the 1D dges of said projecting tongue.

JULIUS H. HU STED.

g the Commissioner of Patents, 

